Gossen MetraWatt METRAHIT PM TECH User manual

METRAHITPM TECH, PM XTRA, PM TUNE, ETECH, EXTRA
METRAHITEU PRO & ESPECIAL
Professional Multimeters / Special Multimeters
Operating Instructions
3-349-456-03
14/8.21

1 Gossen Metrawatt GmbH
Standard Equipment Contact Persons
Standard Equipment
1 Multimeter in HC20 hard case
1 KS17-S measurement cable set
2 Batteries
1 DAkkS calibration certificate
1 Protective rubber cover
1 Condensed operating instructions *
* Detailed operating instructions are available for download on the Internet
at www.gossenmetrawatt.com
Overview of features included
1) Alternating voltage measurement with specially reduced input impedance
2) 16 Mbit = 2048 kByte = 61,600 measured values, sampling rate adjustable from 0.1
seconds to 9 hours
Function PM XTRA
PM TUNE
EXTRA
PM TECH
ETECH
EU PRO
ESPECIAL
Voltage VDC
(Ri  9 M) ✓
✓ ✓
Voltage VAC TRMS
(Ri  9 M)
✓ ✓ ✓
Voltage Lo1) VAC TRMS
(Ri 1 M)
✓ ✓ ✓
Voltage VAC+DC TRMS
(Ri 9 M)
✓ ✓ ✓
Frequency Hz @ VAC and/or
@ Lo 1) VAC ... 300 kHz ... 300 kHz ... 300 kHz
Low-pass filter 1 kHz @ VAC / @ LoVAC
Bandwidth @ VAC+DC and/or VAC 100 kHz 20 kHz
Frequency MHz @ 5V TTL
1 Hz...1 MHz
— —
Duty cycle % 2.0 % ... 98 % — —
Voltage level measurement dB ✓ ✓ ✓
Resistance  ✓ ✓ ✓
Continuity test
@ICONST = 1 mA
✓ ✓ ✓
Diode measurement
@I
CONST
= 1 mA
✓ ✓ ✓
Temperature measurement
with thermocouple (TC) Typ K
Temperature measurement
°C/°F RTD
Pt100/Pt1000 —
Capacitance measurement F ✓ ✓
—
Current ADC
600 A/6 mA
60 mA/600 mA
6 A/10 A (16 A)
60 mA/600 mA
6 A/10 A (16 A) 6 A/10 A (16 A)
Current AAC+DC TRMS
Current AAC TRMS
Bandwidth @ AAC+DC and/or AAC 10 kHz
Frequency Hz @ AAC ... 60 kHz
Measurement with current clamp with
adjustable transfer factor
mV / A
mA / A
mV / A
A / A
Data logger function 2)
(memory) 16 Mbit — —
Relative value measurement REL ✓ ✓ ✓
Zero point ZERO ✓ ✓ ✓
MIN/MAX/DATA Hold ✓ ✓ ✓
IR interface (38.4 kBd) ✓ ✓ ✓
Power pack connector socket ✓
— —
Protective rubber cover ✓ ✓ ✓
Fuse 10 A / 1000 V 10 A / 1000 V —
Protection IP52 IP52 IP52
Measuring category 1000 V CAT III
600 V CAT IV 600 V CAT II
DAkkS calibration certificate ✓ ✓ ✓
Function PM XTRA
PM TUNE
EXTRA
PM TECH
ETECH
EU PRO
ESPECIAL

Gossen Metrawatt GmbH 2
Contact Persons
Accessories (sensors, plug inserts, adapters, consumable materials)
The accessories available for your instrument are checked for
compliance with currently valid safety regulations at regular
intervals, and are expanded as required for new applications.
Currently up-to-date accessories which are suitable for your mea-
suring instrument are listed at the following web address along
with photo, order number, description and, depending upon the
scope of the respective accessory, data sheet and operating in-
structions: www.gossenmetrawatt.com
See also chapter 12 on page 63.
Product Support
Technical Inquiries
(use, operation, software registration)
If required please contact:
Gossen Metrawatt GmbH
Product Support Hotline
Phone: [phone]
Fax: [phone]
e-mail [email protected]
Software Enabling for METRAwin10 (as of version 6.xx)
Gossen Metrawatt GmbH
Front Office
Phone: [phone]
Fax: [phone]
e-mail: [email protected]

3 Gossen Metrawatt GmbH
Standard Equipment Contact Persons
Recalibration Service
At our service center, we calibrate and recalibrate all instruments
supplied by Gossen Metrawatt GmbH, as well as other manufac-
turers, for example after one year within the framework of your
test equipment monitoring program, as well as prior to use etc.
and offer you free test equipment management services.
Repair and Replacement Parts Service
Calibration Center * and Rental Instrument Service
If required please contact:
GMC-I Service GmbH
Service Center
Beuthener Str. 41
90471 Nürnberg, Germany
Phone: [phone]
Fax: [phone]
e-mail: [email protected]
www.gmci-service.com
This address is only valid in Germany. Please contact our
representatives or subsidiaries for service in other countries.
* DAkkS Calibration laboratory for measured electrical quantities,
D-K-15080-01-01, accredited in accordance with
DIN EN ISO/IEC 17025
Accredited quantities: direct voltage, direct current value, direct current
resistance, alternating voltage, alternating current value, AC active
power, AC apparent power, DC power, capacitance, frequency,
temperature
Competent Partner
Gossen Metrawatt GmbH is certified in accordance with
DIN EN ISO 9001.
Our DAkkS calibration laboratory is accredited by the Deutsche
Akkreditierungsstelle GmbH (National accreditation body for the
Republic of Germany) in accordance with DIN EN ISO/IEC 17025
under registration number D-K-15080-01-01.
We offer a complete range of expertise in the field of metrology:
from test reports and factory calibration certificates, right on up to
DAkkS calibration certificates.
Our spectrum of offerings is rounded out with free test equipment
management.
As a full service calibration lab, we can calibrate instruments from
other manufacturers as well.

Gossen Metrawatt GmbH 4
Table of Contents
Contents Page Contents Page
1 Safety Instructions ..............................................................6
2 Applications ........................................................................8
2.1 Intended Use / Use for Intended Purpose ........................................... 8
2.2 Use for Other than Intended Purpose ................................................. 8
2.3 Liability and Guarantee ..................................................................... 8
2.4 Opening of Equipment / Repair ......................................................... 8
3 Documentation ....................................................................9
3.1 Danger Symbols .............................................................................. 9
3.2 Meanings of Acoustic Warning Signals .............................................. 9
4 Operating Overview – Connections, Keys, Rotary Switch,
Symbols ............................................................................10
5 Initial Start-Up ...................................................................14
5.1 Inserting Batteries or Rechargeable Batteries ................................... 14
5.2 Activation ...................................................................................... 14
5.3 Setting the Operating Parameters ................................................... 14
5.4 Switching the Instrument Off .......................................................... 15
6 Control Functions ..............................................................16
6.1 Selecting Measuring Functions and Measuring Ranges .................... 16
6.1.1 Automatic Range Selection ............................................................. 16
6.1.2 Manual Measuring Range Selection ................................................ 16
6.1.3 Quick Measurements ..................................................................... 17
6.2 Zero Offset / Relative Measurements .............................................. 17
6.3 Display (LCD) ................................................................................. 18
6.3.1 Digital Display ................................................................................ 18
6.3.2 Analog Display .............................................................................. 18
6.4 Measured Value Storage: DATA (auto-hold / compare) ..................... 19
6.4.1 Saving Minimum and Maximum Values – MIN/MAX Function ........... 20
6.5 Measurement Data Recording (METRAHIT PM XTRA / PM TUNE /
EXTRA only) .................................................................................... 21
7 Measurements ..................................................................23
7.1 Voltage Measurement .................................................................... 23
7.1.1 Direct and Pulsating Voltage Measurement, V DC and V (DC+AC) ..... 24
7.1.2 Alternating Voltage Measurement with 1 MW Load Resistance
and Frequency Measurement with Selectable Low-Pass Filter .......... 25
7.1.3 Alternating Voltage and Frequency Measurement V AC and Hz V AC
with Selectable Low-Pass Filter, V AC + FiL and dB V AC ................. 27
7.1.4 Frequency and Duty Cycle Measurements
(METRAHIT PM XTRA / PM TUNE / EXTRA only) ................................ 30
7.2 Resistance Measurement, 
7.3 Continuity Test ............................................................................. 32
7.4 Diode Testing with a Constant Current of 1 mA .............................. 33
7.5 Temperature Measurement ............................................................ 34
7.5.1 Measurement with Thermocouples, Temp TC .................................. 34
7.5.2 Measurement with Resistance Sensors (METRAHIT PM XTRA /
PM TUNE / EXTRA and METRAHIT PM TECH / ETECH only) ................. 35
7.6 Capacitance Measurement
(METRAHIT PM XTRA / PM TUNE / EXTRA and METRAHIT PM TECH /
ETECH only) .................................................................................... 36
7.7 Current Measurement .................................................................... 37
7.7.1 Direct and Pulsating Current Measurement, Direct Connection,
A DC and A (DC+AC) ..................................................................... 38
7.7.2 Alternating Current and Frequency Measurement, Direct Connection,
A AC and Hz .................................................................................. 39

5 Gossen Metrawatt GmbH
Table of Contents
Contents Page Contents Page
7.7.3 Direct and Pulsating Current Measurement
with Current Clamp Sensors, A DC and A (DC+AC) ................................40
7.7.4 Alternating Current Measurement with Current Clamp Sensors,
A AC and Hz ..................................................................................41
7.7.5 Direct, Pulsating and Current Measurement with Current Clamps
Transformer A AC and Hz ...............................................................42
8 Device and Measuring Parameters .................................. 43
8.1 Paths to the Various Parameters .....................................................44
8.2 List of All Parameters ....................................................................44
8.3 Querying Parameters – InFo Menu (as moving letters) ......................45
8.4 Entering Parameters – SETUP Menu ................................................45
8.5 Default Settings ..............................................................................48
9 Interface Operation ........................................................... 49
9.1 Activating the Interface ...................................................................49
9.2 Configuring Interface Parameters ....................................................50
10 Technical Data ................................................................ 51
11 Maintenance and Calibration ........................................... 59
11.1 Displays – Error Messages .............................................................59
11.2 Batteries ........................................................................................59
11.3 Fuse ( METRAHIT PM XTRA / PM TUNE / EXTRA
and
METRAHIT PM TECH / ETECH
only) ......................................................60
11.4 Housing Maintenance .....................................................................61
11.5 Return and Environmentally Sound Disposal .....................................61
11.6 Recalibration ..................................................................................62
11.7 Manufacturer’s Guarantee ..............................................................62
12 Accessories ...................................................................... 63
12.1 General .........................................................................................63
12.2 Technical Data for Measurement Cables
(included: KS17-2 safety cable set) .................................................63
12.3 NA X-TRA Power Pack (not included) ...............................................63
12.4 Interface Accessories (not included) ................................................64
13 CE Declaration .................................................................. 64
14 Index ................................................................................. 65

Gossen Metrawatt GmbH 6
Safety Precautions
1 Safety Instructions
Observe this documentation, in particular all included safety infor-
mation, in order to protect yourself and others from injury, and to
prevent damage to the instrument.
• Carefully and completely read and adhere to these operating
instructions.
The document can be found at http://www.gossenme-
trawatt.com. Retain this document for future reference.
• Observe and comply with all safety regulations which are appli-
cable for your work environment.
• Wear suitable and appropriate personal protective equipment
(PPE) whenever working with the instrument.
• The instrument may only be operated by persons who are ca-
pable of recognizing contact hazards and taking the appropri-
ate safety precautions.
Touch hazards in accordance with the standard prevail any-
where, where dangerous voltages may occur.
Avoid working alone when taking measurements which involve
touch hazards. Be certain that a second person is present.
• Use only the specified accessories (included in delivery or
listed as optional) with the instrument.
• Carefully and completely read and adhere to the product docu-
mentation of the optional accessories. Retain these docu-
ments for future reference.
• The instrument may only be used as long as it’s in good work-
ing order.
Inspect the instrument before use. Pay particular attention to
damage, broken insulation or kinked cables.
• Accessories and cables may only be used as long as they’re
fully intact.
Inspect all cables and accessories before use. Pay particular
attention to damage, broken insulation or kinked cables.
• If the instrument or an accessory doesn’t function flawlessly,
remove it from operation and secure it against inadvertent use.
• If the instrument or accessory is damaged during use, e.g.
through falling, remove it from operation and secure it against
inadvertent use.
• Do not use the instrument after long periods of storage under
unfavorable conditions (e.g. humidity, dust or extreme tem-
perature).
• Do not use the instrument after extraordinary stressing due to
transport.
• Only use the instrument and the accessories in compliance
with the specified technical data and under the specified con-
ditions (ambient conditions, IP protection class, measuring cat-
egory, etc.).
• Do not use the instrument in potentially explosive atmo-
spheres.
• The instrument and the included accessories may only be
used for the tests/measurements described in the instrument‘s
documentation.
• Maximum allowable voltage between the voltage measuring
terminals, and between all connections and earth is 1000 V for
measuring category III, or 600 V for measuring category IV.
The METRAHIT EU PRO / ESPECIAL variant is an exception with
measuring category CAT III 600 V.

7 Gossen Metrawatt GmbH
Safety Precautions
• The multimeter may only be operated with installed batteries or
rechargeable batteries. Dangerous currents and voltages are
otherwise not indicated!
The instrument may also be damaged.
• Weak battery: Do not perform any safety-relevant measure-
ments if the “battery low” symbol appears in the battery dis-
play.
Furthermore, compliance with the listed specifications is no
longer assured in the case of a weak battery.
• Be prepared for the occurrence of unexpected voltages at
devices under test (e.g. defective devices). For example,
capacitors may be dangerously charged.
• Do not perform any measurements in electrical circuits with
corona discharge (high-voltage).
• Dangerous pulsating voltages in HF electrical circuits! Use cau-
tion when performing measurements there.
• Do not use the device if the battery compartment cover has
been removed. Touch contact with dangerous voltage is other-
wise possible.
• Do not use the device if the fuse cover has been removed.
Touch contact with dangerous voltage is otherwise possible.
• The instrument is equipped with fuses (Exception
METRAHIT EU PRO / ESPECIAL). The instrument may only be
used as long as the fuses are in flawless condition. Defective
fuses must be replaced. Batteries may only be charged in un-
damaged condition.
• Plugging in any cables must not necessitate any undue force.
• Never touch conductive ends (e.g. of test probes).
• Fully unroll all measurement cables before starting a test/mea-
surement. Never perform a test/measurement with the mea-
surement cable rolled up.
• Ensure that alligator clips, test probes or Kelvin probes make
good contact.

Gossen Metrawatt GmbH 8
Safety Precautions
2 Applications
Please read this important information!
2.1 Intended Use / Use for Intended Purpose
The instruments METRAHIT PM TECH, PM XTRA, PM TUNE,
ETECH, EXTRA, EU PRO und ESPECIAL are TRMS digital multimeters.
They are portable instruments which can be held in the hand while
performing measurements. They can be used to perform the mea-
surements described in these operating instructions.
The instruments METRAHIT PM TECH, PM XTRA, PM TUNE,
ETECH, EXTRA are multimeters for professional use.
The instruments METRAHIT EU PRO / ESPECIAL are special multi-
meters without fuse link for measurements at current transformers
in the field of power supply.
Performance characteristics of the individual models: see chapter
“Overview of features included” on page 1.
The multimeter is equipped with an automatic socket blocking
mechanism for your safety, and in order to safeguard your instru-
ment. This mechanism is linked to the rotary switch and only al-
lows access to those jacks which are actually required for the se-
lected function. It also prevents the user from turning the rotary
switch to impermissible functions after the measurement cables
have already been plugged in.
Safety of the operator, as well as that of the instrument, is only as-
sured when it’s used for its intended purpose.
2.2 Use for Other than Intended Purpose
Using the instrument for any purposes other than those described
in the condensed operating instructions or these instrument oper-
ating instructions is contrary to use for intended purpose.
2.3 Liability and Guarantee
Gossen Metrawatt GmbH assumes no liability for property dam-
age, personal injury or consequential damage resulting from im-
proper or incorrect use of the product, in particular due to failure
to observe the product documentation. Furthermore, all guaran-
tee claims are rendered null and void in such cases.
Nor does Gossen Metrawatt GmbH accept any liability for data
loss.
2.4 Opening of Equipment / Repair
The equipment may be opened only by authorized service per-
sonnel to ensure the safe and correct operation of the equipment
and to keep the warranty valid. Even original spare parts may be
installed only by authorized service personnel.
When the instrument is opened, voltage conducting parts may be
exposed. The instrument must be disconnected from the measur-
ing circuit before the performance of repairs or the replacement of
parts. If repair of a live open instrument is required, it may only be
carried out by trained personnel who are familiar with the dangers
involved.
Unauthorized modification of the instrument is prohibited.
In case the equipment was opened by unauthorized personnel,
no warranty regarding personal safety, measurement accuracy,
conformity with applicable safety measures or any consequential
damage is granted by the manufacturer.

9 Gossen Metrawatt GmbH
Safety Precautions
3 Documentation
The following symbols with the meanings listed below are used in
this documentation.
3.1 Danger Symbols
Warning concerning a point of danger
(attention: observe documentation!)
Warning concerning dangerous voltage at the measurement
input: U > 55 V AC or U > 70 V DC
3.2 Meanings of Acoustic Warning Signals
High voltage warning: > 1000 V (intermittent acoustic signal)
Heavy current warning: > 10 A (intermittent acoustic signal)
Very heavy current warning: > 16 A (continuous acoustic
signal)
!

Gossen Metrawatt GmbH 10
Operating Overview – Connections, Keys, Rotary Switch, Symbols
4 Operating Overview – Connections, Keys, Rotary Switch, Symbols
1 Display (LCD) (see page 11 for significance of symbols)
2MAN / AUTO shift key for manual/automatic measuring range selection
 Increase parameter values
Operating mode menu: Select individual menu entries against direction of flow
3ON / OFF | LIGHT key for switching device and display illumination on and off
4FUNC | ENTER multifunction key
Operating mode menu: Acknowledge entry (ENTER)
5
Increase measuring range or move decimal point to the right (MAN function)
6Rotary switch for measuring functions, (see page 13 for significance of symbols)
7 DAkkS calibration mark
8 Connector socket for ground
9 Connector socket for current measurement with automatic blocking
10 Connector socket for voltage, resistance, temperature, diode and
capacitance measurement with automatic blocking
11 DATA/MIN/MAX
Key for freezing, comparing and deleting measured value, and for Min/Max
 Decrease values
Operating mode menu: Select individual menu entries in direction of flow
12 MEASURE | SETUP
Key for switching back and forth between measuring and menu function
13 ZERO | ESC
Key for zero balancing
Operating mode menu: Exit current menu level and
return to a higher level,
exit parameters configuration
without saving data
14  Decrease measuring range or move decimal point to the left (MAN function)
15 Connector for power pack (METRAHIT PM XTRA / EXTRA only)
16 Infrared interface
1
3
4
16
5
6
9 *
 chapter 6.3
chapter 5
chapter 7
chapter 9
chapter 8
 chapter 5 ff.
chapter 5
13
12
 chapter 6.1
10
2
chapter 6.1.2
14
8
Max. 1000 V!
11
15
chapter 6.1 
chapter 6.4
chapter 8
chapter 5
chapter 5.1 
7
 page 13
chapter 8

11 Gossen Metrawatt GmbH
Operating Overview – Connections, Keys, Rotary Switch, Symbols
Symbols Used in the Digital Display 1 Battery level indicator
2 ON: continuous operation (automatic shutdown deactivated)
3 MAN: manual measuring range selection is active
4 Digital display with decimal point and polarity display
5 max/min: Min/Max value storage
6 DATA: display memory, “freeze” measured value
7 STORE: memory mode active,
with METRAHIT PM XTRA / PM TUNE / EXTRA only
8 ISO: no function here
9 Upm: no function here
10 Transformation factor (current clamp factor)
11 IR: infrared interface display
12 Scale for analog display
13 Pointer for analog display (bar graph – pointer)
depending upon setting in SET menu for the A.diSP parameter
Triangle appears: indicates overranging
14 dB: Alternating voltage level measurement
15 Selected type of current
16 TRMS measurement
17 Pt100/Pt1000: selected platinum resistance sensor with automatic
recognition of Pt100/Pt1000, with METRAHIT PM XTRA / PM TUNE /
EXTRA and METRAHIT PM TECH / ETECH only
18 Type K: temperature measurement with type K (NiCr-Ni) thermocouple
19 sec (seconds): unit of time
20 REL: relative measurement with reference to offset
21 Unit of measure
22 ZERO: zero balancing active
23 Warning regarding dangerous voltage: U > 55 V AC or U > 70 V DC
24 Continuity test with acoustic signal is active
25 Diode measurement selected
26 h (hours): unit of time
Battery full
Battery OK
Battery weak
Battery (almost) dead, U < 2.0 V
Active data transmission to /  from multimeter
IR interface in stand-by mode
(ready to receive starting commands)
Battery level indicator
Interface indicator
1 2 10 11
13
14
15
16
17
21 18
23
24
765
2022
8
3
12
19
26
4
25
9

Gossen Metrawatt GmbH 12
Operating Overview – Connections, Keys, Rotary Switch, Symbols
Symbols of Rotary Switch Positions
Switch FUNC Display Measuring Function METRAHIT
PM XTRA
PM TUNE
EXTRA
METRAHIT
PM TECH
ETECH
METRAHIT
EU PRO
ESPECIAL
V~ 0/4 V~ AC TRMS Alternating voltage, TRMS AC, full bandwidth 
Hz (V) 1 Hz ~ AC Voltage frequency, up to 300 kHz 
V~ 2 V Fil ~ AC TRMS Alternating voltage, TRMS AC, with low-pass (1 kHz) 
dB 3 dB ~ AC TRMS Alternating voltage level measurement 
V~ 1 MW0/3 V~ AC TRMS Alternating voltage, TRMS AC, full bandwidth, input 1 M   
V~ 1 V Fil ~ AC TRMS Alternating voltage, TRMS AC, up to 1 kHz, input 1 M   
Hz (V) 1 MW2 Hz ~ AC Voltage frequency, up to 300 kHz, input 1 M   
V 0/2 V DC Direct voltage 
V1 V DC + AC TRMS Pulsating voltage, TRMS ( ) 
MHz 0/2 MHz (High) frequency @ 5 V~ up to 1 MHz — —
%1 % Duty cycle @ 5 V~ — —
W—(Direct current) resistance 
0/2 Continuity testing with acoustic signal 
1 V DC Diode voltage up to 6 V 
Temp TC 0/2 C Typ-K Temperature thermocouple Type K 
Temp RTD 1C Pt 100/1000 Temperature with resistance sensor Pt 100/Pt 1000   —
— nF Capacitance   —
A0/2 A DC Direct current value 
A1 A DC+AC TRMS Pulsating current value, TRMS AC+DC 
A~ 0/2 A~ AC TRMS Alternating current value, TRMS AC 
Hz (A) 1 Hz ~ AC Current frequency 
0/2 A DC Direct current value with AC DC current clamp sensors 1 V:1/10/100/1000 A 
1
A DC + AC TRMS Pulsating current value, TRMS, with AC DC current clamp sensors, see above 
0/2 A~ AC TRMS
Alternating current strength, TRMS, with current clamp sensors, see above 
Hz ( ) 1 Hz ~ AC Current frequency 
1kHz
1kHz
VAC DC+ VAC
2VDC 2
+=
A
A
A
A

13 Gossen Metrawatt GmbH
Operating Overview – Connections, Keys, Rotary Switch, Symbols
User Interface Symbols in the Following Chapters
 ... Scroll through main menu
 ...  Scroll through sub-menu
 Select decimal point
 Increase/decrease value
time Sub-menu/parameter (7-segment font)
1nFo Main menu (7-segment font, boldface)
Symbols on the Device
Warning concerning a point of danger
(Attention: observe documentation!)
Ground
CAT II Measuring category II device,
(Significance per IEC 61010-1: Measurements in elec-
trical circuits which are directly connected to the low-
voltage mains: via plug, e. g. in household, office and
laboratory applications…)
CAT III / IV Measuring category III or IV device,
(Significance per IEC 61010-1:
III :Measurements in building installations: stationary
consumers, distributor terminals, devices connected
permanently to the distributor
IV: Measurements at power sources for low-voltage
installations: meters, main terminals, primary overvolt-
age protection
Continuous, doubled or reinforced insulation
Indicates EC conformity
▲ IR ▼Position of the infrared interface, window on the top of
the instrument
Position of the power pack connector socket,
see also chapter 5.1
(METRAHIT PM XTRA / PM TUNE / EXTRA only)
Fuse for current measuring ranges, see chapter 11.3
(not METRAHIT EU PRO / ESPECIAL)
The device may not be disposed of with the trash.
Further infommllfrmation regarding the WEEE mark
can be accessed on the Internet at www.gossenme-
trawatt.com under the search term WEEE (see also
chapter 11.5).
Calibration mark (blue seal):
see also “Recalibration” on page 62
!5 V / 600 mA
Serial number
Registration number
Date of calibraion (year – month)
German Accrediation Body GmbH – Calibration lab
XY123
2018-02
D-K-
15080-01-01

Gossen Metrawatt GmbH 14
Initial Start-Up – Setup
5 Initial Start-Up
5.1 Inserting Batteries or Rechargeable Batteries
Be certain to refer to chapter 11.2 regarding correct battery
installation.
Momentary battery voltage can be queried in the Info menu (see
chapter 8.3).
Attention!
!
Disconnect the instrument from the measuring circuit before
opening the battery compartment lid in order to replace the
batteries.
Operation with the Power Pack
(accessory for METRAHIT PM XTRA / PM TUNE / EXTRA, not included, see
chapter 12.3)
Installed batteries are disconnected electronically if the NA X-TRA
power pack is used, and need not be removed from the
instrument.
If rechargeable batteries are used, they must be recharged
externally.
If the external power supply is switched off, the device is
automatically switched to battery operation without interruption.
5.2 Activation
Switching the Instrument On Manually
➭Press the ON / OFF | LIGHT key until the display appears.
Power-up is acknowledged with a brief acoustic signal. As
long as the key is held depressed, all of the segments at the
liquid crystal display (LCD) are illuminated.
The LCD is depicted on page 11.
The instrument is ready for use as soon as the key is released.
Display Illumination
After the instrument has been switched on, background illumina-
tion can be activated by briefly pressing the ON / OFF | LIGHT key. Il-
lumination is switched back off by once again pressing the same
key, or automatically after approximately 1 minute.
Switching the Instrument On via PC
The multimeter is switched on after transmission of a data block
from the PC, assuming the “irStb ” has been set to “ir on ”
(see chapter 8.4).
However, we recommend using the power saving mode: “ir off ”.
Note
Electrical discharge and high frequency interference may
cause incorrect displays to appear, and may disable the
measuring sequence.
Disconnect the device from the measuring circuit. Switch the
instrument off and back on again in order to reset. If the
problem persists, briefly dislodge the battery from the
connector contacts (see also chapter 11.2).
5.3 Setting the Operating Parameters
Setting Time and Date
See the “t iME ” and “dAtE ” parameter in chapter 8.4.
Display Modes for the Analog Display
Selection can be made from two different display modes
(see “A.diSP ” parameter in chapter 8.4).
Display Modes for the Digital Display
Selection can be made from two different display modes
(see “0.diSP ” parameter in chapter 8.4).

15 Gossen Metrawatt GmbH
Initial Start-Up – Setup
5.4 Switching the Instrument Off
Switching the Instrument Off Manually
➭Press the ON / OFF | LIGHT key until 0FF appears at the display.
Shutdown is acknowledged with a brief acoustic signal.
Automatic Shutdown
The instrument is switched off automatically if the measured value
remains unchanged for a long period of time (maximum measured
value fluctuation of approx. 0.8% of the measuring range per min-
ute, or 1 C or 1 F per minute), and if none of the keys or the ro-
tary switch have been activated before a selected period of time
in minutes has elapsed (see “APoFF ” parameter on page 46.)
Shutdown is acknowledged with a brief acoustic signal.
Exceptions include:
Transmission and memory mode operation, continuous operation
and whenever a dangerous voltage is applied to the input
(U > 55 V AC or U > 70 V DC).
Disabling Automatic Shutdown
The instrument can be set to continuous operation.
➭Simultaneously press the and keys to
this end.
The “CONTINUOUS ON” function is indicated at by means of
the ON display to the right of the battery symbol.
The „CONTINOUS ON“ setting can only be undone by changing the ap-
propriate parameter (device off parameter, see „APoFF “ on page 46),
or by switching off the device manually.
In this case, the parameter is reset to 10 minutes.
➭
ON / OFF
LIGHT
FUNC
ENTER
ON / OFF
LIGHT
Auto-Range
8.8.8.8.8
Illumination On
000.00
ON / OFF
LIGHT
Illumination Off
000.00
ON / OFF
LIGHT
0ff
ON / OFF
LIGHT
Long
(1 s)

Gossen Metrawatt GmbH 16
Control Functions
6 Control Functions
6.1 Selecting Measuring Functions and Measuring Ranges
The rotary switch is linked to the automatic socket blocking
mechanism, which only allows access to two connector jacks for
each function. Be certain to remove the appropriate plug from its
respective jack before switching to and from the “A” functions.
The socket blocking mechanism prevents the user from inadver-
tently turning the selector switch to impermissible functions after
the measurement cables have been plugged in to the instrument.
6.1.1 Automatic Range Selection
The multimeter is equipped with auto-ranging for all measuring
functions, except for temperature measurement, diode and
continuity testing, and the MHz measuring function. Auto-ranging
is active as soon as the instrument is switched on. The instrument
automatically selects the measuring range which allows for
highest possible resolution of the applied quantity. When the
instrument is switched to frequency measurement, the previously
selected voltage measuring range remains active.
The Auto-Ranging Function
The multimeter is switched automatically to the next higher range
at (60000 d + 1 d 06000 d), and to the next lower range at
(05000 d - 1 d  50000 d).
Exception, capacitance measurement:
The multimeter is switched automatically to the next higher range
at (6000 d + 1 d 0 600 d), and to the next lower range at
(0500 d - 1 d  5000 d).
6.1.2 Manual Measuring Range Selection
Auto-ranging can be deactivated and measuring ranges can be
selected manually in accordance with the following table by
pressing the MAN / AUTO button.
The desired measuring range can then be selected with the  or
 scroll key.
The instrument is automatically returned to range selection when
the MAN / AUTO key is pressed, the rotary switch is activated or the
instrument is switched off and back on again.
Overview: Auto-Ranging and Manual Range Selection
* Via manual measuring range selection only
Function Display
MAN / AUTO
Manual mode active:
utilized measuring range is fixed MAN
 or 
Range switching sequence for:
V: 600 mV* 6 V 60 V 600 V 1000 V
Hz(V AC): 600 Hz 6 kHz 60 kHz 300 kHz
MHz 600 Hz 6 kHz 60 kHz 600 kHz  1 MHz
: 600 6 k 60 k600 k 6 M 60 M
A: METRAHIT PM XTRA / PM TUNE / EXTRA :
600A 6 mA 60 mA
 600 mA 6 A 10 A (16 A)
METRAHIT PM TECH / E
TECH :
60 mA 600 mA 6 A 10 A (16 A)
METRAHIT EU PRO / E
SPECIAL : 6 A  10 A (16 A)
Hz (A AC): 600 Hz 6 kHz 60 kHz
A: A  6 V see chapter 7.7.3 ff.
A
 600 mA 6 A see chapter 7.7.3 ff.
F: METRAHIT PM XTRA / PM TUNE / EXTRA
and METRAHIT PM TECH / ETECH :
60 nF 600 nF 6 F 60F 600F
MAN
MAN / AUTO Return to automatic measuring range selection —

17 Gossen Metrawatt GmbH
Control Functions
6.1.3 Quick Measurements
Measurements performed using a suitable fixed measuring range
are executed more quickly than those which utilize automatic
range selection. Quick measurement is made possible with the
following two functions:
•Manual measuring range selection, i.e. selection of the measuring
range with the best resolution (see chapter 6.1.2).
or
• With the DATA function (see chapter 6.4). In this way, the
appropriate measuring range is selected automatically after the
first measurement and the second measurement is executed
more quickly.
The selected measuring range remains active for the subsequent
series of measurements with these two functions.
6.2 Zero Offset / Relative Measurements
Depending upon deviation from the zero point, zero balancing or
a reference value for relative measurements can be stored to
memory:
The applicable reference or correction value is deducted
individually for the respective measuring function as an offset from
all subsequent measurements, and remains in memory until
deleted, or until the multimeter is switched off.
Zero balancing and reference value adjustment can be used for
auto-ranging, as well as for manual measuring range selection.
Zero Balancing
➭Plug the measurement cables into the instrument and connect
the free ends to each other, except for capacitance
measurement in which case the ends of the cables are not
connected to each other.
➭Briefly press the ZERO | ESC key.
The instrument acknowledges zero balancing with an acoustic
signal, and the “ZERO REL” symbol appears at the LCD. The
value measured at the moment the key is pressed serves as a
reference value.
➭Zero balancing can be cleared by once again pressing the
ZERO | ESC key.
Note
As a result of TRMS measurement, the multimeter displays a
residual value of 1 to 30 digits with short-circuited measure-
ment cables as the zero point for V AC / I AC or V(AC+DC) /
I (AC+DC) measurements (non-linearity of the TRMS con-
verter). This has no influence on specified accuracy above
1% of the measuring range (or 3% in the 1000 V and 10 A
ranges).
Setting the Reference Value
➭Plug the measuring cables into the instrument and measure a
reference value (max. 25,000 digits, or 5000 digits in 10 A
range).
Deviation from zero
– With short-circuited measurement cables for V, , A
– With open input for capacitance unit of measure F
Display
0 to 200 digits ZERO REL
> 200 to 25000 digits REL

Gossen Metrawatt GmbH 18
Control Functions
➭Briefly press the ZERO | ESC key.
The instrument acknowledges storage of the reference value
with an acoustic signal, and the “ZERO REL” or the “REL”
symbol appears at the LCD. The value measured at the
moment the key is pressed serves as a reference value.
➭The reference value can be cleared by once again pressing the
ZERO | ESC key.
Notes Regarding Relative Measurement
• Relative measurement effects the digital display only. The
analog display continues to read out the original measured value.
• In the case of relative measurement,  / F or AC quantities
may also appear as negative values.
6.3 Display (LCD)
6.3.1 Digital Display
Measured Value, Unit of Measure, Type of Current, Polarity
The measured value with decimal and plus or minus sign appears
at the digital display. The selected unit of measure and type of
current are displayed as well. A minus sign appears to the left of
the value during measurement of zero-frequency quantities, if the
plus pole of the measured quantity is applied to the “” input.
The “0.diSP ” parameter can be used to determine whether lead-
ing zeros will be appear or be suppressed at the measured value
display (see chapter 8.4).
Overranging
If the upper range limit of 60,000 digits is exceeded “0L” (overload)
appears at the display.
Exceptions: „0L “ appears at the display as of 6000 digits during
capacitance measurement, as well as during continuity and diode
testing.
6.3.2 Analog Display
Measured Value, Polarity
The analog display demonstrates the dynamic performance of a
moving-coil mechanism. This display is especially advantageous
for observing measured value fluctuation, and for balancing
procedures.
Two different display modes can be selected in the “SET ” menu
with the help of the “A.diSP ” parameter (see chapter 8.4):
• Bar graph
• Pointer: The current measured value is tracked in real-time.
The analog scale displays a negative range of 2 scale divisions for
the measurement of zero-frequency quantities, allowing for
precise observation of measured value fluctuation around zero. If
the measured value exceeds the negative range of 2 scale
divisions, polarity is reversed at the analog display.
Scaling of the analog scale is automatic. This is very helpful for
manual measuring range selection.
Overranging
Overranging in the positive range is displayed by means of the
right triangle symbol.
Refresh Rate
In the bar graph and pointer modes, the analog display is
refreshed 40 times per second.

19 Gossen Metrawatt GmbH
Control Functions
6.4 Measured Value Storage: DATA (auto-hold / compare)
An individual measured value can be automatically “frozen” with
the DATA function (auto-hold). This is useful, for example, when
contacting the measuring points with the test probes requires
your full attention. After the measuring signal has been applied
and the measured value has settled in in accordance with the
“condition” listed in the table below, the measured value is frozen
at the digital display and an acoustic signal is generated. The test
probes can now be removed from the measuring points, and the
measured value can be read from the digital display. If the
measuring signal falls below the value specified in the table, the
function is reactivated for storage of the next value.
Measured Value Comparison (DATA Compare)
If the currently frozen value deviates from the first saved value by
less than 100 digits, the acoustic signal is generated twice. If
deviation is greater than 100 digits, only a brief acoustic signal is
generated.
Note
The DATA function has no effect on the analog display, at
which the current measured value continues to appear.
However, when the digital display if “frozen”, the decimal
point is fixed as well (fixed measuring range, symbol: MAN).
The selected measuring range should not be manually
changed as long as the DATA function is active.
The DATA function is deactivated by pressing and holding the
DATA/MIN/MAX key (for approx. 1 second), when the measuring
function is changed or when the instrument is switched off and
back on again.
1) Reactivation results from falling short of specified measured value limits.
2) Two acoustic signals are generated the first time a measured value is
saved as a reference value. For subsequent data hold, two acoustic
signals are only generated if the currently frozen value deviates from the
first saved value by less than 100 digits.
Key: MV = measured value, R = measuring range
DATA
Function
Press
DATA /
Min/Max
Condition Response from Instrument
Measuring
Function
Measuring
Signal
Display Acous-
tic
MV
Digital DATA
Activate Brief blinks Once
Save
(stabilized
measured
value)
V, A, Hz, dB,
F, MHz, %
> 10%
of R Is dis-
played Static Once
Twice 2)
 0L
Reactivate 1)
V, A, Hz, dB,
F, MHz, %
< 10%
of R Stored
MV Blinks
 = 0L
Change to
Min/Max Brief See table in chapter 6.4.1
Exit Long Is cleared Is cleared Twice
V, A, Hz
t [s]
60,000
5,000
Activated Reactivated
Save Save
of measuring range
dB, F, MHz, %
d
d